Rice bran oil is a healthy oil from many aspects.The oil has a balanced fatty acid profile comparing with many other vegetable oils.The key difference is the minor components or micronutrients or unsaponifiable matter...Rice bran oil is a healthy oil from many aspects.The oil has a balanced fatty acid profile comparing with many other vegetable oils.The key difference is the minor components or micronutrients or unsaponifiable matters contained in the oil that are very special and in larger percentages.The oil contains more than 1.5%oryzanol that gives nutritional and pharmaceutical functions from the studies so far.More studies are needed to demonstrate the wide functions in many aspects.The oil also contains large percentage of phytosterols which received huge amount of studies for nutritional applications.Furthermore,the oil contains tocopherols and tocotrienols,in which for the later particularly it gives many special functions including prevention of breast cancers for example.When the oil is properly processed and used in foods,those functions are more and more demonstrated in nutritional or biological studies.Thus the oil in food and pharmaceutical applications is in exploring both in academic studies and industrial practice.In this work,an overview of such progress is given.展开更多
Objective:The purpose of this study is to demonstrate the decomposition and removal effects of dextranase-containing toothpaste on dental plaque. Method:In the decomposition test,the supernatant of three times diluted...Objective:The purpose of this study is to demonstrate the decomposition and removal effects of dextranase-containing toothpaste on dental plaque. Method:In the decomposition test,the supernatant of three times diluted toothpaste was applied to a dextran solution (as a dental model plaque),and samples were evaluated by colorimetric reaction with Fehling’s test solution. In the removal test,the supernatant of three times diluted toothpaste was applied to a dental model plaque prepared with Streptococcus mutans and the optical density at 550nm (hereinafter referred to as OD_(550)) was measured as the remaining plaque. Results:In the test solution of toothpaste containing dextranase,a red-brown precipitate was observed. On the other hand,a precipitate was not observed in the test solution of the placebo toothpaste which did not contain dextranase. The plaque removal effect of the test toothpaste was 2. 7 times higher than that of the placebo toothpaste. Conclusion:Our findings suggest that the test toothpaste containing dextranase has a higher plaque removal effect by cuttingα-1,6-linkages inside the plaque. Therefore,the test toothpaste might be helpful to prevent dental caries.展开更多
文摘Rice bran oil is a healthy oil from many aspects.The oil has a balanced fatty acid profile comparing with many other vegetable oils.The key difference is the minor components or micronutrients or unsaponifiable matters contained in the oil that are very special and in larger percentages.The oil contains more than 1.5%oryzanol that gives nutritional and pharmaceutical functions from the studies so far.More studies are needed to demonstrate the wide functions in many aspects.The oil also contains large percentage of phytosterols which received huge amount of studies for nutritional applications.Furthermore,the oil contains tocopherols and tocotrienols,in which for the later particularly it gives many special functions including prevention of breast cancers for example.When the oil is properly processed and used in foods,those functions are more and more demonstrated in nutritional or biological studies.Thus the oil in food and pharmaceutical applications is in exploring both in academic studies and industrial practice.In this work,an overview of such progress is given.
文摘Objective:The purpose of this study is to demonstrate the decomposition and removal effects of dextranase-containing toothpaste on dental plaque. Method:In the decomposition test,the supernatant of three times diluted toothpaste was applied to a dextran solution (as a dental model plaque),and samples were evaluated by colorimetric reaction with Fehling’s test solution. In the removal test,the supernatant of three times diluted toothpaste was applied to a dental model plaque prepared with Streptococcus mutans and the optical density at 550nm (hereinafter referred to as OD_(550)) was measured as the remaining plaque. Results:In the test solution of toothpaste containing dextranase,a red-brown precipitate was observed. On the other hand,a precipitate was not observed in the test solution of the placebo toothpaste which did not contain dextranase. The plaque removal effect of the test toothpaste was 2. 7 times higher than that of the placebo toothpaste. Conclusion:Our findings suggest that the test toothpaste containing dextranase has a higher plaque removal effect by cuttingα-1,6-linkages inside the plaque. Therefore,the test toothpaste might be helpful to prevent dental caries.
